电压和电流计算结果得负值，说明它们的参考方向假设反了。
参考答案：对
It took ______ people as well as ______ time to build the pyramid.
A．a large number of; a great many
B．a great many; a large amount of
C．a great many of; large amounts of
D．a large amount of; a great deal of
诉讼参与人
